Answer:
C) C = 10π ; A=25π
Step-by-step explanation:
We are ask to find the circumference and area of a circle with a diameter of 10 inches, but we are to leave our answer in terms of π
First lets start by calculating the circumference.
The formula for calculating circumference of a circle is;
circumference = 2πr where r=radius
But we were given diameter in the question to be 10, r = \(\frac{d}{2}\) = \(\frac{10}{2}\) = 5
We can now proceed to insert our value into the equation
Circumference = 2 × π × 5 = 10π
Lets now go ahead to calculate the area of the circle
To calculate area of the circle, we use the formula;
Area = πr²
= π×5×5
=25π
Therefore C = 10π and A=25π
